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aalyn [17]
2 years ago
6

What is evolution? brainliest

Biology
1 answer:
Sedaia [141]2 years ago
3 0

Answer:

Evolution is change in the heritable characteristics of biological populations over successive generations.

Explanation:

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what is crossing a hybrid with a homozygous dominant or a homozygous recessive organism resulting in a 1:1 ratio called? 
Ghella [55]
That would be a test cross.
7 0
3 years ago
How does a cell avoid dna overload
lora16 [44]

Answer:

the anwer is  cell divides

Explanation:

8 0
2 years ago
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Vitamins A, D, E, and K are dependent upon carbohydratesproteinsfats for their absorption by cells.
daser333 [38]
False, the description is incorrect.

The only right answer is oil or lipid or fats. These lipid macromolecules are the only substance needed in order for these vitamins A, D E and K to be absorbed by the cell and be used in many cellular activities. 
5 0
3 years ago
The proper function of the cardiovascular system relies on blood following the correct pathway through the heart. Valves within
Nadya [2.5K]

Answer:

The Mitral/Bicuspid Valve

Explanation:

The heart is composed of 4 chambers: left and right atria, and left and right ventricles. The “right heart” (right atrium and ventricle) receives deoxygenated blood from the systemic circulation through the Vena Cava, and impels this blood towards the lungs through the Pulmonary Arteries where it will be oxygenated. The “left heart” (left atrium and left ventricle) receives oxygenated blood from the pulmonary circulation through the Pulmonary veins and impels this blood towards the systemic circulation through the Aorta artery.

The systemic and pulmonary circuits work in series, and maintaining the unidirectional course of the blood flow is very important. This can be done by the presence of fibrous valves that are present between the atrium and the ventricles, and in between the ventricles and the Pulmonary/Aorta artery.

The location of these structures are as follows:

Systemic circulation ⇒ Right Atrium → [Tricuspid Valve] → Right Ventricle → [Pulmonary Valve] → Pulmonary Artery ⇒ Pulmonary circulation

Pulmonary circulation ⇒ Left Atrium → [Mitral/Bicuspid Valve] → Left Ventricle → [Aortic Valve] → Aorta ⇒ Systemic circulation

3 0
2 years ago
Compare What do complex organisms<br> have that makes them different from simple<br> organisms?
Sladkaya [172]

Answer:

Simple Organism

some simple organisms are made of single cell. Others are made of many cells that are similar

Complex organisms

in complex organisms, cells are organized into tissues, which make up organs. Organs form organ systems.

Explanation: im not sure if its correct but i hope it helps

5 0
2 years ago
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